Definition of razor-grinder in US English:

razor-grinder

noun

  • 1A person who grinds or sharpens razor blades. Now chiefly historical.

  • 2Any of various birds having a call or song likened to the sound of a cut-throat razor being sharpened; specifically (a) Australian the restless flycatcher, Myiagra inquieta; (b) English regional the European nightjar, Caprimulgus europaeus; (c) English regional the grasshopper warbler, Locustella naevia.

Origin

Early 18th century. From razor + grinder.

Pronunciation

razor-grinder

/ˈreɪzəˌɡrʌɪndə/